userservlet.java

有发布

package servlet;

import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.util.*;
import bean.*;
import DB.UserCheck;

public class UserServlet extends HttpServlet {
    private static final String CONTENT_TYPE = "text/html; charset=GBK";

    //Initialize global variables
    public void init() throws ServletException {
    }

    //Process the HTTP Get request
    public void doGet(HttpServletRequest request, HttpServletResponse response) throws
            ServletException, IOException {

        //获取页面的输入数据
        String username = request.getParameter("username");
        String pwd = request.getParameter("password");

        request.setCharacterEncoding("GBK");

        UserCheck userc = new UserCheck();
        //向Usercheck()中传参数并根据密码判断
        String rest = userc.Usercheck(username, pwd);
        if (rest.equals("OK")) { //正确登录
            request.getSession().setAttribute("user", username);
            request.getRequestDispatcher("main/adminindex.jsp").forward(request,
                    response);
        } else if (rest.equals("pwd")) { //密码不正确
            request.getSession().setAttribute("error", "pwd");
            request.getRequestDispatcher("main/newslogin.jsp").forward(request,
                    response);
        } else { //前两者都不正确即为管理员不存在
            request.getSession().setAttribute("error", "NOUSER");
            request.getRequestDispatcher("main/newslogin.jsp").forward(request,
                    response);
        }
    }

    //Process the HTTP Post request
    public void doPost(HttpServletRequest request, HttpServletResponse response) throws
            ServletException, IOException {
        doGet(request, response);
    }

    //Clean up resources
    public void destroy() {
    }
}